APA Style
Syukron, A., Kholil, M.
(2013).
Six Sigma: Quality for Business Improvement
.
Yogyakarta:
Graha Ilmu.
MLA Style
Syukron, Amin., Kholil, Muhammad.
"Six Sigma: Quality for Business Improvement".
Yogyakarta:
Graha Ilmu,
2013.
Akuntansi.